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Question:

A garden measuring 15 by 24 feet is to be completely surrounded by a fence. Fencing costs $2 per foot. What is the total cost to fence the entire garden?

A $156
Explaination

The fence is to go around the perimeter of the garden. For a garden that is 15 by 24, the perimeter is (15 \u00D7 2) + (24 \u00D7 2), or 78 feet. The fencing will cost 78 \u00D7 $2, or $156.